Precision-engineered in the USA, this RedLine Tools 4-Flute Variable Index and Helix Corner Radius Square End Mill delivers exceptional performance for professional machining applications. Featuring a 0.25-inch cutting diameter with a 0.03-inch corner radius, this carbide end mill is designed for superior durability and cutting efficiency. The variable helix and variable index design reduces chatter and improves surface finish quality. With an advanced AlTiSN finish, this tool offers extended tool life and heat resistance during demanding operations. The 0.25-inch shank diameter ensures compatibility with standard collets and tool holders. This REP4063 model weighs just 10 grams and comes as a single unit in protective packaging. Ideal for precision milling operations requiring excellent corner detail and surface finish.